Injector



(Model.) F. W. KREMER.

'INJBG'TOR Patented Feb. 2 ,1886.

INVEJVTOR M ./Itorney.

UNITED STATES PATENT OFFICE..

FRANKLIN XV. KREMER, OF VADSVORTII, OHIO.

INJECTOR.

SPECIFICATION forming part of Letters Patent No. 335,227, dated February2,1886.

Application filed .Tune 11, 1835.

. is to provide an injector of such character as that should the waterbe withdrawn from the suction-pipe momentarily,or thej et be broken, asby an abrupt jar, which is liable in such instruments when used ontraction or railway locomotive engines where the water-supply is takenfrom tanks, and when the water is returned to the suction-pipe, thewater will be again taken up by the instrument and the jetrfc-established automatically. The means employed for accomplishing thisobject constitute the present inventiomas I will now proceed toparticularly point out and claim.

In the accompanying drawings, in the several figures of which like partsare similarly designated, Figurel is a front elevation of my improvedinjector; Fig. 2, a central vertical section ofthe same in a plane atright angles to Fig. l; and Fig. 3 is a horizontal cross-section in theplane of line m a', Fig.1.

I prefer to unite the several sections ortubes a. b of my injector byrods or bolts and nuts c c,engaging ears or lugs d cl and e e on the endsections or tubes and unthreaded joints, as in my Patent No. 282,092,referred to. A bonnet, f, is screw-tapped into the head of the uppersection, c, and is provided with a suitablypacked steamtight gland, g.The bonnet fis screw-threaded internally at j" for any suitable distanceto receive the screw threaded spindle 7L, which is provided with asuitable lever or hand-wheel, h, for operating it. This spindle has atransverse opening or portJ, a collar, h3, below it,which seats againstthe bottom f2 of the bonnet within the steam-chamber a ofthe uppersection, c, and a longitudinal passage, hf, leading from the opening orport h2 to the point of the spindle, and opening into thesuction-chamber a2, which in this Serial No. 108,369. (Model.)

example of my invention is integral with the tube a. The steam andsuction chambers are separated by a diaphragm, ,which is provided withan opening for the passage of the spindle, and this opening" is renderedsteam-tight by a packed gland, j, screwtapped in from the steam-chamber.

L is the steam-inlet, and Z the water inlet or suction. In this exampleof my invention the lower end of suction a is chambered to rcceive thelifting-tube m, which has the jetpassage m aligned with the spindle h.Beneath the lifting-tube and held in place by it upon orin the upper endof the boiler-section b is the combining-tube a, having the ported basen', and a check valve, o, beneath the same, substantially as in myPatent No. 299,229.

p is the ordinary annular overliowchamber, in the passage leading fromwhich into the exhaust or delivery chamber gis arranged the check-valver,held in place by the screw-cap s.

t is the delivery-tube.

The operation is as follows: Vhen the spindle is run out till its collarh is seated against the bonnet-bottom ]",steam will be cut offand theinstrument be inactive; but when the parts are in the position shown inFig. 2, steam enters through the inlet lc and port if and passage h2making impact in lifting-tube m, and passes through ported base n outinto the chamber q, and escapes past valve r out at the overliow,whereby a vacuum,socalled,is produced in the suction-chamber a2, andwater is drawn in and forced by the steam through the lifting-tube m. Assoon as the water becomes accelerated, there will be a partial vacuumproduced between the tubes m and a, which will cause the check-valve oto rise and close the ports in the base nof the combining-tube. Vhen thewater is sufficiently accelerated to overcome the resistance of theboiler-pressure, it is driven across the space between the combiningtube and delivery-tube, producing a vacuum in chamber q,

which causes the check-valve r to close the ICO tion of the water atthat point, when the discharge at the overliow will cease. In highpressure where the steam is in excess of the water-supply, steam willescape at the overdow, in which event the steam-spindle should bewithdrawn from the lifting-tube until the discharge ceases at theoverilow. Thus it will be seen that in the construction of this machinethe spindle performs a double func- 1o tion--viz., it is adjustable tovarying steampressure, and also for shutting oli" and controlling thequantity of steam to be admitted to the instrument, thus dispensing witha globe-valve in steam-pipe.

In my machine there is practically but one chamberb and when the machineis in operation it is impossible to have an unequal vacuum between thetubcsmfn and nt, and should there be an excess of water at m n, which isf 2o liable to occur with varying steam-pressure or varying lift, avacuum is produced at n t,caus

ing the check-valve o to open the ports in the ported base n', and thesurplus water from this point will be carried to the boiler. Thus inthis construction it will be seen that an equal vacuum or pressure willbe maintained on either side ol" the combining-tube, and consequentlythere can be no loss'of water, as has heretofore occurred.

It will be understood that in my machine the steam -jet of spindle lrperforms both the functions ot' lifting and forcing, and through theemployment ofthe tube m', combining-tube u and its ported base,check-valve o, exhaust and delivery tube t is had a perfectly automaticmachine, and which I am pleased to call a triple-tube automaticinjector.

My construction possesses,among others,the following advantages: Iheworking parts are 4o all accessible without disturbing pipe-connections.By one manipulation the adjustment for varying pressure and for theadmission of steam is had; the machine starts up again automaticallyupon the return of the water afterbeing temporarily withdrawn; the readysubstitution or renewal of parts, and the provision against impairmentof operation by having only one manually-movable part.

5o 1. In an injector having steam and water inlets and an outlet, thetubular screw-spindle h, provided with a steam-inlet port, h2, and acollar, h3, on the same, and a threaded bonnet, f, in which said spindleis moved longitudinally to open and wholly close the inlet, combinedwith the suction-chamber separated from the steaminlet by the diaphragmt', and the packing-gland j,surrounding said spindle and bearing uponthe diaphragm, substantially as shown and described.

2. The combining -tube provided with a valvular base interposed betweenthe suction and'exhaust chambers, a superposed liftingtube, alongitudinally-adjustable steam-inlet spindle provided with asteam-inlet port, and a collar on said spindle co-operating with thebonnet, in which said spindle is adjustable to open and close said portby the longitudinal movement of said spindle in said bonnet, combined tocontrol the flow of water commensurately with the steampressure,substantially as described.

3. In an injector, the combination, with the steam and water inlets, thesuction-chamber, and theoutlet, of the screw-threaded steamspindleh,having alongitudinal steam-passage, h4, an inlet-port, h2, and a collar,h3, arranged below said port, the screw-threaded bonnetf, in which thesaid spindle is adjustable, and against the bottom of which it is seatedto wholly shut off the supply of steam, and a hand-wheel to operate saidspindle, substantially as described.

4. The tube in', forming a chamber above the combining-tube, combinedwith such combining-tube, parts therein, a check-valve cooperatingautomatically with said ports, a deliveryachamber having anautomaticallyoperated check-valve in its overflow, and asteaminductionspindle provided with a valvular port and operable bylongitudinaladjustment to automatically start and maintain the tlow of water, and toreestablish it after accidental cessation, substantially as described.

In testimony whereof I have hereunto set my hand this 9th day of June,A. D. 1885.

FRANKLIN W. KREMER.

Witnesses:

E. J. YOUNG, H. B. CLARK.

